/// <summary>
/// Convert EWS attachment to System.Net.Mail.Attachment
/// </summary>
/// <param name="attachment">EWS attachment</param>
/// <returns>Attachment</returns>
public static System.Net.Mail.Attachment ToAttachment(this Microsoft.Exchange.WebServices.Data.Attachment attachment)
{
MemoryStream contentStream = new MemoryStream();
// Write the attachmentcontent to a MemoryStream
if (attachment is ItemAttachment)
{
var itemAttachment = attachment as ItemAttachment;
itemAttachment.Load(ItemSchema.MimeContent);
contentStream = new MemoryStream(itemAttachment.Item.MimeContent.Content);
}
if (attachment is FileAttachment)
{
var fileAttachment = attachment as FileAttachment;
fileAttachment.Load(contentStream);
}
var result = new System.Net.Mail.Attachment(contentStream, attachment.Name)
{
ContentId = attachment.ContentId,
ContentType = new System.Net.Mime.ContentType(attachment.ContentType),
};
result.ContentDisposition.CreationDate = attachment.LastModifiedTime;
result.ContentDisposition.DispositionType = attachment.ContentType;
result.ContentDisposition.FileName = attachment.Name;
result.ContentDisposition.Inline = attachment.IsInline;
result.ContentDisposition.ModificationDate = attachment.LastModifiedTime;
result.ContentDisposition.Size = attachment.Size;
return(result);
}
public static void downloadWithUniqueName(this Microsoft.Exchange.WebServices.Data.Attachment att, ref string path, int mtaNum)
{
try
{
Directory.CreateDirectory(path);
path += ("\\" + EvaultWin.Common.evWinHash.MD5Hasing.GetMD5HashFromText(mtaNum.ToString() + EvaultWin.Common.evWinRandom.winRandomNumber.GetRandomName(DateTime.Now.ToString())) + Path.GetExtension(att.Name));
if (att is FileAttachment)
{
FileAttachment fa = att as FileAttachment;
fa.Load(path);
}
else
{
ItemAttachment itemAtt = att as ItemAttachment;
itemAtt.Load(new PropertySet(EmailMessageSchema.MimeContent));
MessageBox.Show("is item Att with path : " + path);
//path += ".eml";
byte[] mc = itemAtt.Item.MimeContent.Content;
using (FileStream fs = File.Open(path, FileMode.Create, FileAccess.Write))
{
fs.Write(mc, 0, mc.Length);
}
}
}
catch (Exception err)
{
path = string.Empty;
WinEventLog.WriteEventLog("MTA failed to download attachment for scanning, error = " + err.Message, EventLogEntryType.FailureAudit);
EvaultWin.DLP.evWinExceptionHandlingCMC.ExceptionHandling.DetailEventLog(true, false,
EvaultWin.DLP.evWinExceptionHandlingCMC.EventExceptionType.UnexpectedResult, EvaultWin.DLP.evWinExceptionHandlingCMC.EventSeverityLevel.Error,
err.Message, err.Source.ToString() + " : " + err.TargetSite.ToString(), err.ToString().Replace("\r", "").ToString());
//MessageBox.Show("Failed to download attachment, err : " + err.Message);
}
}
